probably the fuel pump?
The most likely cause is a dirty fuel filter that starves the engine.
What year is your cougar and also is it a V6 or a V8? This information would be nice to know :) it is attached to the engine
I had the same problem in my 1999 Mercury Cougar, I replaced the flasher located in the blinker assembly. It was very simple to do. Flasher cost about $10
The gears in the speedometer are stripped. If the odometer is working then you have input.
Having no catalytic converter installed is illegal and can cause a myriad of problems. Probably not a backfire though.
* No power steering fluid in reservoir * The power steering pump is not operating
Your intake manifold probably has a crack in the water jacket.
the battery could have a dead cell, this could cause it to not charge. Have the battery tested to be sure.
cut wire between the dash and radio and fuse box.
There are several things that can cause your 2000 Chevrolet to backfire and die. The most common cause is a plugged catalytic converter.
yes if the other car is also a 4.6